Atomic Structure, Periodic Table, Ionic Formular Flashcards
(18 cards)
Atom
the building blocks of life
Nucleus
the centre of an atom consisting of protons and neutrons
shell
The regions surrounding an atoms nucleus holding electrons
protons
positevly charged particles
neutrons
neutrally charged particles
electrons
negatively charged particles
atomic number
the number of protons in an atom
mass number
the number of protons and neutrons totalled
element
A substance made up of a single type of atom
compound
substances made up of two or more types of atoms
electron configuration
the number and placement of electrons on the shells
ion
a charged atom or group of atoms with an overall charge
valency
the charge of an atom based off of the number of electrons it can lose or gain.
valence electron
electrons on the outer shell of an atom
period
the number of shells in an atom, runs horizontally along the periodic table
group
runs vertically along the periodic table, represents the amount of valence atoms.
monatomic ions
a charged particle formed when a single atom gains/loses electrons.
polyatomic ions
groups of atoms gaining or losing electrons in a chemical reaction to form ions.